#!usr/bin/env python  
# -*- coding:utf-8 _*-
""" 
@author:robot
@file: count_it.py 
@version:
@time: 2023/04/19 
"""
import time


def CountDown(n):
    while n > 0:
        n -= 1


start = time.perf_counter()
CountDown(n=100000000)
end = time.perf_counter()
print(end - start)
